Broadway Gold Mine
Silver Star, Montana
45.6962°N 112.3147°W
Mine Overview
The Broadway Gold Mine is near Silver Star, Montana. Historically the site has been associated with the Silver Star Mining District which is now part of the Deerlodge National Forest. The Broadway Gold Mine was closed at the time of data entry with no known plans to re-open. Production size when active was considered to be small. Mine operations consist of surface and underground workings. There is one known shaft. Subsurface depth reaches a maximum of 198 meters (650 feet) and extends 610 meters (2,000 feet) in length. The ore mined is composed of cuprite and malachite with waste material consisting primarily of serpentine, pyrolusite and jasper. The ore body is irregularly shaped 60 meters (200 feet) in width. The host rock in this area is limestone. The Northern Rocky Mountains physiographic province of the Rocky Mountain System characterize the geomorphology of the surrounding area.
Site identification and general characteristics. Learn about USGS mines.
Owner Name and Address
Victoria Mines Incorporated
Salt Lake City, Utah- Type
- Owner
Commodities
Additional textual information about a site or mine.
- Commodity Type Importance
- Gold Metallic Primary
- Silver Metallic Primary
- Copper Metallic Secondary
- Lead Metallic Secondary
- Zinc Metallic Secondary
Development
20-STAMP MILL AND CYANIDATION PLANT BUILT 1900, MILL BURNED DOWN AROUND 1903.; 100-120 TONS/ORE PER DAY WERE MILLED FOR CONCENTRATES IN 1949.
Workings
Workings at the site.
Workings #1
- Type: Surface and Underground
- Sub Surface Length: 609.6 Meters
- Sub Surface Depth: 198.12 Meters
Workings
TWO SHAFTS, 400 AND 550 FEET DEEP, WITH LEVELS AT 75 175, 300, 350 AND 450 FEET. A 1100-FEET CROSSCUT CONNECTED WITH THE 300-FEET LEVEL. A WINZE FROM THE 450-FEET LEVEL ATTAINED 650 FEET OPEN PIT (1949).
Concentration Process
Processes that concentrated or enriched the mineralization of the mine.
- Concentration Process
- Contact Action
Geology
OXIDIZED ORE SHOOTS
Orebody
Characteristics of the ore body.
- Width: 60.96 meters (200.00 feet)
- Strike: north 70 west
- Dip: 30 southwest
Rocks
Geological materials at the site.
- Class? 1st Order Name? 2nd Order Name? 3rd Order Name? 4th Order Name? Most Specific Name? Begin Time End Time Description?
- Associated Rock Butte Quartz Monzonite Plutonic Rock Granitoid Quartz Monzonite Quartz Monzonite Upper Cretaceous Upper Cretaceous -
- Host Rock Limestone Sedimentary Rock Carbonate Limestone Limestone - - -
- Mineralization - - - - - Paleocene Paleocene -
Structure
Geologic structural features affecting or characterizing the site or mine.
- Scale Description
- Regional Boulder Batholith
Physiography
Physiographic area where the resource is found.
- Division Province? Section
- Rocky Mountain System Northern Rocky Mountains -
Alteration
Mineralogical and chemical alteration at or near the site, which may help to indicate the geographic extent of the geological processes producing the mine.
- Type? Alterations
- Local Oxidation
Ore Control
Controls on emplacement of ore such as faults or other structural features.
- Text?
- Contact Zone-Limestone/quartz Monzonite
Nearby Deposits
Other deposits in the same region.
-
Victoria Gold Mine
- Gold commodity Site type Mine status
- Madison, Montana
- Underground
- 0.09 miles
-
Broadway-Victoria Gold Mine
- Gold commodity Site type Mine status
- Madison, Montana
- Underground
- 0.11 miles
-
Hudson Group
- Gold commodity Site type Mine status
- Madison, Montana
- Contact Metasomatic
- 0.22 miles
-
Hudson Gold Mine
- Gold commodity Site type Occurrence status
- Madison, Montana
- 0.23 miles
-
Keystone Gold Mine
- Gold commodity Site type Mine status
- Madison, Montana
- Underground
- 0.24 miles
-
Keystone Gold Mine
- Gold commodity Site type Mine status
- Madison, Montana
- Contact Metasomatic
- 0.28 miles
-
Pollinger Gold Mine
- Gold commodity Site type Mine status
- Madison, Montana
- Underground
- 0.41 miles
-
Edgerton Silver Mine
- Copper commodity Site type Mine status
- Madison, Montana
- Vein
- 0.63 miles
-
Rhyolite Copper Mine
- Copper commodity Site type Occurrence status
- Madison, Montana
- Vein
- 0.69 miles
-
Green Campbell Group
- Gold commodity Site type Mine status
- Madison, Montana
- Vein
- Underground
- 0.82 miles
Nearby Places
- Silver Star (1.58 miles away)
- Waterloo (6.17 miles away)
- Twin Bridges (10.52 miles away)
- Whitehall (15.96 miles away)
- Janney (17.09 miles away)
- Sheridan (17.58 miles away)
Nearby Mining Districts
- Silver Star Mining District (0 miles away)
- Highland-Fish Creek Mining District (5.83 miles away)
Nearby Lands
- Deerlodge National Forest (3.27 miles away)
Footnotes
* Mine bounds on map indicate the general area that a mine occupies. For an detailed map, refer to the overseeing BLM field office.
** The mine central point is based on an average of the mine's bounding box(es) and does not necessarily fall on the claim itself.
1 World-class significance is determined by total endowment of the contained commodity. This includes all past production and remaining reserves. Each commodity is considered separately and commodities cannot be combined to arrive at a significant size. The tonnage thresholds are from the mine model grade-tonnage studies. As of June 2008, many entries were classified as significant under less strict rules.
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Understanding Location Data
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Understanding Townships
A “township” can refer to two different things. Both are part of the PLSS measurement system but have different uses.
Deposit
MAIN ORE SHOOT DIPS 30 SW FOR FIRST 500-FEET, THEN 65SW FOR NEXT 150-FEET WIDTH RANGES FROM A FEW FEET TO 200 OR MORE. SMALLER SHOOTS EXTEND INTO GRANITE.